Develop Reference

Can't use android:background with button from the new material components

I'm using the new material components com.google.android.material:material with android x but I can't set a custom background to the button.
I know that I can use app:backgroundTint to change the color
but the default background has some padding that I want to get rid of, and the old way of using android:background to set my own background but this is no longer working.
I looked at the docs but can't find any mention to this change.

In the Material Components Library, the MaterialButton has a default style with insetBottom and insetTop with a value of 6dp.
You can change it using:
<com.google.android.material.button.MaterialButton
android:insetTop="0dp"
android:insetBottom="0dp"
../>
If you want to change the background color you can use the app:backgroundTint attribute or you can override some theme attributes from a default style then you can use new materialThemeOverlay attribute.
In your case you can do something like:
<style name="MtButtonStyle"
parent="Widget.MaterialComponents.Button">
<item name=“materialThemeOverlay”>#style/GreenButtonThemeOverlay</item>
</style>
<style name="GreenButtonThemeOverlay">
<item name="colorPrimary">#color/green</item>
</style>
Finally starting with the version 1.2.0-alpha06 you can use the android:background attribute in the MaterialButton.
<MaterialButton
app:backgroundTint="#null"
android:background="#drawable/button_drawable"
... />

The documentation for the MaterialButton class says:
Do not use the android:background attribute. MaterialButton manages its own background drawable, and setting a new background means MaterialButton can no longer guarantee that the new attributes it introduces will function properly. If the default background is changed, MaterialButton cannot guarantee well-defined behavior.
However, the GitHub readme says:
Note: MaterialButton is visually different from Button and AppCompatButton. One of the main differences is that AppCompatButton has a 4dp inset on the left and right sides, whereas MaterialButton does not.
This mentions only left/right inset, but the Attributes section of the readme shows that all four insets are supported:
So you could add these attributes to your <MaterialButton> tag:
android:insetTop="0dp"
android:insetBottom="0dp"

Looking at https://medium.com/#velmm/material-button-in-android-e4391a243b17 I found that app:backgroundTint (and app:backgroundTintMode) works. It changes a color, but not a drawable selector.
Also you can replace <Button with <android.widget.Button.

If you want to use gradient drawable as MaterialButton's background,
set Your MaterialButton as below:
<com.google.android.material.button.MaterialButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
app:backgroundTint="#null"
android:background="#drawable/group_47"
app:layout_constraintEnd_toEndOf="#+id/input_password"
app:layout_constraintStart_toStartOf="#+id/input_password"
app:layout_constraintTop_toBottomOf="#+id/input_password" />

If you wish to keep your
android:background="#drawable/button_background"
And have MaterialButton respect it, then you must set
app:backgroundTint="#null"
app:backgroundTintMode="add" // it doesn't matter the value, but it must be set
Please note that you can also use app:background instead, although I've noticed enough breaking changes that I still prefer the method above.

I face the same issue when I use state drawable in a Button but It does not change the background of the button. After searching for a long time, I found 2 solutions as below:
The first solution is change the application theme from MaterialComponents to AppCompat in values/themes.xml file. then state drawable will work well.
to
<style name="Theme.MyApplication" parent="Theme.AppCompat.DayNight.DarkActionBar">
If you still want to use MaterialComponents theme then you can try the second solution.Use <android.widget.Button instead of <Button or <com.google.android.material.button.MaterialButton
<android.widget.Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/state_test"
android:text="Button" />
The second solution I found at Here

The main reason for this decision by the google design team to exclude the functionality android:background="#drawable/" from the initial release versions of the material library is to enable developers to build consistent and professional-looking designs for apps at a faster pace. This is because most developers like me are bad in making decisions related to design and colors of the app.
Also, I found this snippet from google tutorial while migrating to MDC.

Just by using android:backgroundTint
<style name="MyButtonStyle" parent="Widget.MaterialComponents.Button">
<item name="android:backgroundTint">#color/pink</item>
</style>
<com.google.android.material.button.MaterialButton
android:id="#+id/followButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/channel_header_item_margin"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/titeChannelTV"
style="#style/MyButtonStyle"/>

using a simple
app:backgroundTint="#null"
with button attributes works perfectly.

SearchView TextSize

I have the following SearchView implementation in the xml, the text entry has been cut from the top as shown in the below image. No matter what textSize I am putting, nothing changes.
<SearchView
android:id="#+id/search_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textSize="12sp"/>

The textsize of search view text is set using AutoCompleteTextView style.
You have to override above style to change the text size.
1) Add below in your main app theme
<item name="android:autoCompleteTextViewStyle">#style/AppAutoTextCompleteStyle</item>
2) Define new AutoTextCompleteStyle as below. Provide your desired textsize in the style.
<style name="AppAutoTextCompleteStyle" parent="Base.V7.Widget.AppCompat.AutoCompleteTextView">
<item name="android:textSize">16dp</item>
</style>

try adding android:layout_margin="10dp" and android:padding="10dp".
UPDATE: Best way to implement android search interface : https://developer.android.com/guide/topics/search/search-dialog.html

How to change FAB background color

I am using Floating Action Button and I want to change the background color.
Here is my code
<android.support.design.widget.FloatingActionButton
android:id="#+id/btnfab"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_gravity="right|center_vertical"
android:layout_marginBottom="20dp"
android:src="#drawable/search" />
Here is the code I am using to try and achieve this:
1- android:background="#color/mycolor"
2- android:backgroundTint="#color/white"
I am also getting corners on my FAB as shown in image. How should I remove those corner shadows?

You can remove problematic shadow by adding this attributes to your FloatingActionButton:
app:borderWidth="0dp"
app:elevation="6dp"
There is no background color for FloatingActionButton. You change this component color by:
app:backgroundTint="#color/YOURCOLOR"
Remember to have in your parent layout following line:
xmlns:app="http://schemas.android.com/apk/res-auto"

Declare following in your app style:
<item name="colorAccent">#color/yourColor</ item>
cheers

First create a style in your styles.xml:
<style name="PrimaryActionButton" parent="Theme.AppCompat.Light">
<item name="colorAccent">#color/colorPrimary</item>
</style>
Then set the theme of your fab to this style:
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_favorite_white_24dp"
android:theme="#style/PrimaryActionButton"
app:fabSize="normal"
app:rippleColor="#color/colorAccent" />
You can see full descrption in:
Android: Floating Action button

Please update your android support and android material design libraries in build.gradle.
(Add please your build.gradle file above)
According to these sites:
[CodePath] Floating Action Buttons,
[Big Nerd Ranch] Floating Action Buttons in Android Lollipop
and Android Developers reference you should use only:
android:backgroundTint="#color/white"
As I remember, this shadow is well-know problem for Floating action buttons, so please take a look at these additional libraries:
http://android-arsenal.com/tag/173
which may help you to replace this broken element.
Check also:
Change color of Floating Action Button from Appcompat 22.2.0 programmatically
Change background on FloatingActionButton?
Hope it help.

Borderless Button on Pre-Lollipop with Support Library

I am making borderless flat button using support library (23.0.1). It works normal on Lollipop. However on pre-Lollipop when I press button Its color changes to colorButtonNormal color like it's a normal button.
I don't think so it's a normal behaviour and focused color should be grey like on Lollipop.
Here's the screenshot from Lollipop and Pre-lollipop.
First normal behaviour on Lollipop:
Borderless button in normal state and focused state on Lollipop
Not normal behaviour on Pre-Lollipop (Desire color is gray like above but it's not):
Borderless button in normal state and focused state on Pre-lollipop
Theme
<style name="AppTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">
//other stuff
<item name="colorButtonNormal">#color/orangeColor</item>
<item name="buttonBarButtonStyle">#style/BorderlessButtonStyle</item>
</style>
<style name="BorderlessButtonStyle" parent="Widget.AppCompat.Button.Borderless">
<item name="android:textColor">#color/blueTextColor</item>
</style>
And now button in layout:
<Button
android:id="#+id/btnForgotPassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/forgot_your_password"
style="?attr/buttonBarButtonStyle"
/>
Any way to get it write using AppCompat Theme and styles without of making separate Drawables.

Borderless Button works on both Post and Pre Lollipop version with Support Library but there's a small difference between their onPressed color.
Pre-Lollipop: By default onPressed color is same as default Button color set using colorButtonNormal.
Lollipop: By default onPressed color is light grey, which is ideal.
You can make a Borderless Button like this:
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Name"
style="#style/Widget.AppCompat.Button.Borderless"/>
Now If you want to have the same onPressed color on all versions then you can set colorControlHighlight in a new theme and set that theme on Button.
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Name"
android:theme="#style/BorderlessButton"
style="#style/Widget.AppCompat.Button.Borderless"/>
And theme in your style:
<style name="BorderlessButton" parent="Theme.AppCompat.Light">
<item name="colorControlHighlight">YOUR COLOR</item>
</style>
Updated: You can use android:theme attribute for a View since Android 5.0 Lollipop and AppCompat v22.1.0 (and higher).

Adding style="?borderlessButtonStyle" to the Button worked fine for me.

why do you worry with some things just go with this and be free
<Button
android:id="#+id/btnForgotPassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/forgot_your_password"
android:background="#drawable/abc_btn_borderless_material"
/>
and now careless about api stuff

You are using the android implemented style of "buttonBarButtonStyle" since you are calling it via ?atr - use style="#style/BorderlessButtonStyle instead.
Edit: Leave your xml as it is, but you can change it to your wanted behaviour like this:
AppCompatButton button = (AppCompatButton) findViewById(R.id.btnForgotPassword);
ColorStateList colorStateList = new ColorStateList(new int[][] {{0}}, new int[] {0xFF969696});
//969696 is your wanted grey color, just change it
button.setSupportBackgroundTintList(colorStateList);

How to change default ProgressBar circle color on Android

I am currently using an external library in my Android project imported via gradle.
This library show a notification bar with a ProgressBar circle.
This is the code I found in it's sources :
<ProgressBar
android:id="#+id/progress_bar"
android:layout_height="match_parent"
android:layout_marginBottom="4dp"
android:layout_marginTop="4dp"
style="#style/SuperActivityToast_Progress_ProgressBar"/>
The style associated is this one :
<style name="SuperActivityToast_Progress_ProgressBar" parent="android:Widget.Holo.ProgressBar">
<item name="android:layout_width">32dp</item>
<item name="android:layout_marginLeft">8dp</item>
</style>
If I understand correclty, the color of the circle shown is derived from the default one ( green on my phone ).
I need to change it!
Now, I can't modify the source code, and the library itself doesn't offer me the possibility to set the style programmatically.
There is a way to change the default style at app level or better override this specific style?
Thanks
Davide

If you are using the AppCompat theme, it uses the accentColor to tint the circle.
If you want to tint it to a different color than the Theme, then you should consider using ThemeOverylay. E.g. If you want to make the circle tint red you could do the following:
in your styles.xml
<style name="RedAccent" parent="ThemeOverlay.AppCompat.Light">
<item name="colorAccent">#F00</item>
</style>
in your ProgressBar, set the theme to be RedAccent.
<ProgressBar
android:id="#+id/progress_bar"
android:layout_width="32dp"
android:layout_height="32dp"
android:theme="#style/RedAccent"/>
And your circle will now be in red color!

After several attempts I found a solution :
ProgressBar progBar = (ProgressBar) context.getActivity().findViewById(R.id.progress_bar);
if (progBar != null) {
progBar.setVisibility(View.VISIBLE);
progBar.setIndeterminate(true);
progBar.getIndeterminateDrawable().setColorFilter(0xFFFFFFFF, android.graphics.PorterDuff.Mode.MULTIPLY);
}
Simply, i'll get a reference of the progress bar object created by the library and i change it's attributes. ( in my activity i must do that in a "OnStart" method otherwise it is null )
The most important part is the "setColorFilter" that do the magic.

For future references, this change has worked for me is:
Changing the colorControlActivated within AppTheme in your values/styles.xml file:
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Main theme colors -->
....
<!-- Color for circle in progress bar -->
<item name="colorControlActivated">#DC0808</item>
</style>
With this approach, you do not need to perform any action on your <ProgressBar/> tag within your xml file.

Just add color in ProgressBar like below :
<ProgressBar
android:id="#+id/progressbar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:visibility="gone"
android:indeterminateTint="#color/colorPrimary" // add color here
android:layout_centerVertical="true"/>